On Wed, 18 Jun 2008, Nick Piggin wrote:

There are _some_ cases where it can be used, but nobody has been
able to come up with compelling uses really. I don't think this
case is helped very much either because the logic in there using
preempt-disable is fine, isn't it?

Except that it should also have a cond_resched in it. Seems like
an ideal place to put cond_resched because it is not a fastpath.

Does it really need a cond_resched? preempt_enable when it goes to zero
will already check to see if it should schedule.

-- Steve